What was the eighth sign in the last chapter of John's Gospel?
The eighth sign was the miraculous catch of fish. Fishermen, the eleven, had fished all night and caught nothing; Jesus told them to cast the net on the other side of the boat, and the net came up full without breaking, showing His power over the fish of the Sea of Galilee.
Les explains that in the last chapter of John's Gospel, the eighth sign in that book involved fishermen who had been out all night—the twelve, or rather the eleven—and had caught nothing. Jesus was already on the shore with fish ready for breakfast, but He was not going to let them be skunked. He asked if they had caught anything; they said nothing. He told them to put the net on the other side of the boat. When they did, it came up full, and yet it did not break. Les says this shows He knew and had power even over the fish of the Sea of Galilee. This connects with what Paul refers to in Romans: Jesus as the Son of God after the seed of David, but with power.